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266 lines
8.7 KiB
Plaintext
266 lines
8.7 KiB
Plaintext
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What: /config/usb-gadget/gadget/functions/uvc.name
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Date: Dec 2014
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KernelVersion: 3.20
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Description: UVC function directory
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streaming_maxburst - 0..15 (ss only)
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streaming_maxpacket - 1..1023 (fs), 1..3072 (hs/ss)
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streaming_interval - 1..16
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What: /config/usb-gadget/gadget/functions/uvc.name/control
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Control descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/control/class
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Class descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/control/class/ss
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Super speed control class descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/control/class/fs
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Full speed control class descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Terminal descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal/output
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Output terminal descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal/output/default
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Default output terminal descriptors
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All attributes read only:
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iTerminal - index of string descriptor
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bSourceID - id of the terminal to which this terminal
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is connected
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bAssocTerminal - id of the input terminal to which this output
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terminal is associated
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wTerminalType - terminal type
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bTerminalID - a non-zero id of this terminal
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What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal/camera
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Camera terminal descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/control/terminal/camera/default
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Default camera terminal descriptors
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All attributes read only:
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bmControls - bitmap specifying which controls are
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supported for the video stream
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wOcularFocalLength - the value of Locular
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wObjectiveFocalLengthMax- the value of Lmin
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wObjectiveFocalLengthMin- the value of Lmax
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iTerminal - index of string descriptor
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bAssocTerminal - id of the output terminal to which
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this terminal is connected
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wTerminalType - terminal type
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bTerminalID - a non-zero id of this terminal
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What: /config/usb-gadget/gadget/functions/uvc.name/control/processing
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Processing unit descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/control/processing/default
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Default processing unit descriptors
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All attributes read only:
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iProcessing - index of string descriptor
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bmControls - bitmap specifying which controls are
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supported for the video stream
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wMaxMultiplier - maximum digital magnification x100
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bSourceID - id of the terminal to which this unit is
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connected
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bUnitID - a non-zero id of this unit
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What: /config/usb-gadget/gadget/functions/uvc.name/control/header
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Control header descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/control/header/name
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Specific control header descriptors
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dwClockFrequency
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bcdUVC
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Streaming descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/class
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Streaming class descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/class/ss
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Super speed streaming class descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/class/hs
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Date: Dec 2014
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KernelVersion: 3.20
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Description: High speed streaming class descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/class/fs
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Full speed streaming class descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/color_matching
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Color matching descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/color_matching/default
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Default color matching descriptors
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All attributes read only:
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bMatrixCoefficients - matrix used to compute luma and
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chroma values from the color primaries
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bTransferCharacteristics- optoelectronic transfer
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characteristic of the source picutre,
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also called the gamma function
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bColorPrimaries - color primaries and the reference
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white
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/mjpeg
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Date: Dec 2014
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KernelVersion: 3.20
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Description: MJPEG format descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/mjpeg/name
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Specific MJPEG format descriptors
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All attributes read only,
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except bmaControls and bDefaultFrameIndex:
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bmaControls - this format's data for bmaControls in
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the streaming header
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bmInterfaceFlags - specifies interlace information,
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read-only
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bAspectRatioY - the X dimension of the picture aspect
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ratio, read-only
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bAspectRatioX - the Y dimension of the picture aspect
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ratio, read-only
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bmFlags - characteristics of this format,
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read-only
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bDefaultFrameIndex - optimum frame index for this stream
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/mjpeg/name/name
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Specific MJPEG frame descriptors
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dwFrameInterval - indicates how frame interval can be
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programmed; a number of values
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separated by newline can be specified
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dwDefaultFrameInterval - the frame interval the device would
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like to use as default
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dwMaxVideoFrameBufferSize- the maximum number of bytes the
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compressor will produce for a video
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frame or still image
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dwMaxBitRate - the maximum bit rate at the shortest
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frame interval in bps
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dwMinBitRate - the minimum bit rate at the longest
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frame interval in bps
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wHeight - height of decoded bitmap frame in px
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wWidth - width of decoded bitmam frame in px
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bmCapabilities - still image support, fixed frame-rate
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support
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/uncompressed
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Uncompressed format descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/uncompressed/name
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Specific uncompressed format descriptors
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bmaControls - this format's data for bmaControls in
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the streaming header
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bmInterfaceFlags - specifies interlace information,
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read-only
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bAspectRatioY - the X dimension of the picture aspect
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ratio, read-only
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bAspectRatioX - the Y dimension of the picture aspect
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ratio, read-only
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bDefaultFrameIndex - optimum frame index for this stream
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bBitsPerPixel - number of bits per pixel used to
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specify color in the decoded video
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frame
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guidFormat - globally unique id used to identify
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stream-encoding format
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/uncompressed/name/name
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Specific uncompressed frame descriptors
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dwFrameInterval - indicates how frame interval can be
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programmed; a number of values
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separated by newline can be specified
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dwDefaultFrameInterval - the frame interval the device would
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like to use as default
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dwMaxVideoFrameBufferSize- the maximum number of bytes the
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compressor will produce for a video
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frame or still image
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dwMaxBitRate - the maximum bit rate at the shortest
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frame interval in bps
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dwMinBitRate - the minimum bit rate at the longest
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frame interval in bps
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wHeight - height of decoded bitmap frame in px
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wWidth - width of decoded bitmam frame in px
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bmCapabilities - still image support, fixed frame-rate
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support
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/header
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Streaming header descriptors
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What: /config/usb-gadget/gadget/functions/uvc.name/streaming/header/name
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Date: Dec 2014
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KernelVersion: 3.20
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Description: Specific streaming header descriptors
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All attributes read only:
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bTriggerUsage - how the host software will respond to
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a hardware trigger interrupt event
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bTriggerSupport - flag specifying if hardware
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triggering is supported
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bStillCaptureMethod - method of still image caputre
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supported
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bTerminalLink - id of the output terminal to which
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the video endpoint of this interface
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is connected
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bmInfo - capabilities of this video streaming
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interface
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